Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

Replacing the Key Battery for the Mercedes A-Class - B-Class

Model: Mercedes Classe A W169 - Years 2004-2012
Part: Key

In this video, you will see how to disassemble and replace the battery in the remote key for the Mercedes A-Class, as well as the B-Class. First, take your remote in hand and start by removing the physical key from inside it. Next, insert the key into the slot to remove the rear plastic cover, accessing the battery compartment as shown in the video. At this point, remove and replace the battery with a new one of the correct type (in this case, a CR 2025 3V); insert it in the correct orientation and reassemble the cover and the key!

Updated on 14 May 2026 by ScegliAuto

Video tutorial

Related tutorials

Change the Remote Battery on the Mercedes A-Class W169
Change the Remote Battery on the Mercedes A-Class W169
Mercedes Classe A (2004-2012 / W169) .. the battery in the key remote for the Mercedes A-Class W169, as well as the C-Class and B-Class. First, take your remote and remove the physical key from.. …
How to Replace the Key Battery in a Mercedes A-Class
How to Replace the Key Battery in a Mercedes A-Class
Mercedes Classe A (2004-2012 / W169) If pressing the buttons on the key fob does not unlock the doors, it is likely that the key battery is dead. Replacing it is very simple: first, pull…
How to replace the battery in the Mercedes A-Class key.
How to replace the battery in the Mercedes A-Class key.
Mercedes Classe A (2012-2018 / W176) .. the battery of a key for a 2014 Mercedes A-Class W176 model vehicle. To replace the battery, we need to: - remove the top part of the key by pressing.. …

Other guides you may be interested in

    Frequently Asked Questions

    • Classe A 2012-2018 - Why is my Mercedes A-Class W176 key not recognized? Read answer

How to Open a Stuck Boot on the Peugeot 407?

On the Peugeot 407, the boot may become stuck, possibly due to a problem with the control button or the lock actuator. In such cases, you can perform an emergency opening by following the simple procedure shown in this tutorial. First, open the rear doors, then lower the seat back by operating the release lever. Next, go inside the boot, locate the lock, and manually operate it using a flathead screwdriver. The boot will then be free to open.

Watch the video!


by ScegliAuto

More videos